问题

Ann is said ________ research in Africa, and she will come back next month.

A:to do
B:to be doing
C:to have done
D:done

正确答案是：

同类题型

My aunt is going to retire___________.

mademachine or _____ hand

1Sun Tao has had a _______ English course, but he still doesn’t know

I wonderif I could use your mobile phone.——No problem. .

ildren, turn to page ________ andlook at the _______ picture in Lesson Two.